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Stock-Based Plans - Restricted and Performance Stock Units (Details)	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Restricted Stock Units (RSUs)
Number of Nonvested and Outstanding Units
Beginning balance (in shares) | shares	5,141,000
Granted (in shares) | shares	808,000
Released (in shares) | shares	(302,000)
Forfeited (in shares) | shares	(70,000)
Ending balance (in shares) | shares	5,577,000
Weighted-Average Grant Date Fair Value per Unit
Beginning balance (in usd per share) | $ / shares	$ 5.18
Granted (in usd per share) | $ / shares	3.62
Released (in usd per share) | $ / shares	5.40
Forfeited (in usd per share) | $ / shares	5.30
Ending balance (in usd per share) | $ / shares	$ 4.94
Performance Shares
Number of Nonvested and Outstanding Units
Beginning balance (in shares) | shares	1,210,000
Granted (in shares) | shares	0
Performance adjustment for 2018 awards (in shares) | shares	(341,000)
Released (in shares) | shares	0
Forfeited (in shares) | shares	0
Ending balance (in shares) | shares	869,000
Weighted-Average Grant Date Fair Value per Unit
Beginning balance (in usd per share) | $ / shares	$ 10.11
Granted (in usd per share) | $ / shares	0
Performance adjustment for 2018 awards (in usd per share ) | $ / shares	16.97
Released (in usd per share) | $ / shares	0
Forfeited (in usd per share) | $ / shares	0
Ending balance (in usd per share) | $ / shares	$ 7.00

X

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment in Period

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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